Should I shut off the pump if it will not stop?

If you cannot find an open fixture and the pump is clearly running non-stop, switching off its breaker can prevent overheating while you arrange service. Reset it only once if you try again.

Could a waterlogged tank make the pump run constantly?

A failing tank more often causes rapid short cycling than non-stop running. Constant running usually points to a leak, lost prime, low water, a worn pump, or a bad switch.

Well Pumps

Why Does My Well Pump Keep Running?

A well pump that never shuts off usually means it cannot reach cut-out pressure. Here are the common causes and when to stop and call a pro.

By Know Your Well Water Editorial TeamReviewed October 29, 20262 min read

Quick Answer

A well pump that keeps running cannot build pressure up to the cut-out setting, so the pressure switch never tells it to stop. Common causes are a leak somewhere in the system, a pump that has lost prime or worn out, a water level that has dropped, or a faulty pressure switch. Running a pump continuously can overheat and damage it, so this needs prompt attention.

Do not let it run indefinitely

A pump running non-stop can overheat and burn out, especially if it is running dry. If you cannot quickly find an obvious open tap or fixture, have it looked at promptly.

Common causes

A fixture, toilet, or outdoor spigot left open or leaking.
A leak in the plumbing, pressure tank, or the drop pipe/check valve.
The pump has lost prime (common with jet pumps) and is moving air, not water.
The water level in the well has dropped below the pump intake.
A worn pump that can no longer build enough pressure.
A stuck or faulty pressure switch that never reaches cut-out.

Safe things to check

Before calling a pro

1Walk the house and yard for a running toilet, open valve, or dripping fixture.
2Look at the pressure gauge: is pressure climbing at all, or stuck low?
3Check visible plumbing and the pressure tank for leaks or wet spots.
4If you suspect the pump is running dry or the breaker is involved, stop and call a pro.

Switch, wiring, and pump are pro territory

Diagnosing a stuck pressure switch, a failing pump, or a low water level involves energized components and sometimes pulling the pump. That is professional work. Reset a tripped breaker only once; repeated tripping means call a pro.

If the obvious checks turn up nothing, the cause is usually inside the well, the switch, or the pump itself — all of which a licensed well contractor is equipped to test safely.

Frequently asked questions

Should I shut off the pump if it will not stop?: If you cannot find an open fixture and the pump is clearly running non-stop, switching off its breaker can prevent overheating while you arrange service. Reset it only once if you try again.
Could a waterlogged tank make the pump run constantly?: A failing tank more often causes rapid short cycling than non-stop running. Constant running usually points to a leak, lost prime, low water, a worn pump, or a bad switch.

Sources & references

Protect Your Home’s Water: Private Wells — US EPA, accessed October 29, 2026

This guide is documentary research and general information, not a laboratory analysis or professional assessment of your specific well. See our disclaimer.